I caught up with Salesforce.com Marc Benioff at the Web 2.0 Summit, where he gave a presentation of enterprise mashups. In the video I asked Benioff about the shift from focusing on individual applications to platforms with diverse ecosystems and utility-like infrastructure services, such as his company’s Apex platform and AppExchange marketplace and Amazon’s Elastic Compute Cloud (EC2). Benioff calls it moving from killer apps to killer platforms, of which there will be many.